Assigjfob to gsosge william



'E. R..0LsEN. INTERNAL COMBUSTIGN ENGINE.

APPCATION FILED DEC. 15, l9|9 I lci su0 July 19, 1921.

lill/lll vn @Mor/nog@ E.R, LSEN. INTERNAL COMBUSiTlON ENGINE.v

APPLICATION FILED DEC. I5, I9l9.

E. R. OLSEN.

INTERNAL CMBUSTION ENGINE. APPLICATION man 11m15.191s.

Reissued July 19, 1921.

e.. n.. oLsEN. INTERNAL CUMBUSTIUN ENGINE `APPLICATION FILED DEC. I5, |919.

Reissued July 19, 1921K.

" uNiTEn sTATEs PATENT OFFICE. l

`Iamlzs'r n. oLsEN", or DETROIT, MICHIGAN, AssIGNoR To GEORGE WILLIAM oLsEN,

or MUsxEeoN, MICHIGAN.

INTEBNALCOMBUSTIQN ENGINE.

Specification of Relssued Letters Patent. Reissued J illy 19, 1921.

oginl la. 1,208,848, dated lay 21, 1918, Serial No. 187,196, tiled August 20, 1917. Application toi' reissue led December 15,

To all whom 'it may concern:

Bo it known that I, ERNEST R. OLsEN, a citizen of the United States, residing at Detroit, county of `Wayne, and State ot Michigan, have invented certain new and useful Improvements in Internal-Combus- 4tion Engines, of which the following is a specification.

This invention relates to internal combiistion en ines. i

The o jects of this invention are:

First, to provide in an internal combusition engine an improved cylinder structure.

Second, to provide an internal combustion engine havingv an internal rotary cylinder sleeve member vconstituting a valve and which may be removed and inserted from the outer end of lthe cylinder without removingfhe iston. i Y

hir to provide' an engine of the rotary valve ,sleeve type which is simple in sti iicture, economical to manufacture and etii'cient in operation.

Fourth to provide an internal combustion engine o? the type described, in which the crank shaft makes a plurality of revolutions to a single revolution 'bf the sleeve valve.

Fifth, to provide an\interna l combustion engine of the typedescribed, with means for admitting steam tothe cylinders thereof4 during each intake stroke of the pistons.

Sixth, to provide novel means utilizing the rheat of the exhaust ,for supplying steam to said cylinders.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. clearly defined and ioiiited out in the claims.

A structure wliic is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing foi-ming a'pait of this specification, in which:

Figure l is a Side elevation of a Structure embodying the features of in v invention.

Fig. II is a detail horizontal section thore- `of showing the arrangement of the ports and passages.

Fig. .III is an elevation of the sido opposite that shown in Fig. I.

Fig. -IV is a, vertical traiisvcrsi` sci-tion on a lineoorresponding to line 4-4 of Fig. II.

The invention is 1919. Serial No. 345,033.

Fig. V is a detail vertical transverse section on a line corresponding to line 5 5, of Fig. II.

4ig. VI is a detail vertical transverse section on a line corresponding to tho broken lines 6-6 of Figs. I and II, portions of the cylinder head being broken away.

Fig. `VII is an enlarged detail section on a line corresponding to line 7 7 of Fig. VI. Fig. VIII is a detail end elevation of my improved engine portions being broken away, and the gear case shown in section'.

Fig. IX is an enlarged-detail section 'showing the driving connections between the worin shaft and sleeve valves.

Fig. X is an enlarged detail section taken on ra line corres onding to line A10-10 of Fi rs. IV and I `ig. XI is a detail horizontal section similar to Fig. IIoTa modified embodiment of my invention.

Fig. )UI is a vertical transverse section taken on a line corresponding to line 12-12 of Fig-XI. f K

Fig. XIII isa side elevation of a portion of the combined exhaust` steam, and intake manifold, taken in the dircctioi'i of the arrows 13-13 of Fig. XI.

Fig. XIV is a partial end elevation of th base of my improved engine showing the connections between the crank shaft and the worm shaft for actuating the sleeve valves,

`aportion of the gearing housing heilig Fig. XVisa detail sectional view, the view i heilig an enlarged scale showing of the cyldisclosing more clearly the port 'arrangement of valve and cylinder.

Fig. XVI is a plan view. with parts of the head communicates wit-h the water jacket.

In.-tlie drawing similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.-

Referring to the drawing, m v improved engine comprises the base 1, vwhich may have any suitable contour and is provided with a` manhole having the closure 2 therefor.

The cylinders 3 are,in"'the embodiment Y 9o indersshown at the right in Fig. II, the view members 6 and are connected b yion 11 which meshes wit illustrated, formed integral with the u por portion of the base and are surrounded y a water jacket 4, which is also formed integral therewith. The cylinders 3'are formed in pairs connected by the webs 5.

The internal cylinder sleeves or valve members 6 are rotatably mounted within the cylinders 3. The cylinders and valve members are provided with 'coacting shoulders, as indicated at 7 in Fig. IV, whereby the valve members are rotatably supported in the cvlinders. The lower ends of the valve mem rs project from the lower ends of the cylinders and are provided with gear teeth 8, which are engaged by the threads of the worms 9 on` the worm shaft 10. The worms for each pair of cylinders are pitched in opi posits directions, as indicated in AFigs. I andfX, sofas to drivqthe sleeve valves of nach pair of'c linders in opposite directions.

The `worms aft 10 is rovided with a inan idler l2 driven by a gear 13' on the crank shaft 14, driven in synchronism with the movements ofthe crank shaft.

The pistons 15 reciprocate `inthe sleeve means 'of pitmen, 16 with the crank shaft.` ach of the members 6 is' provided with three inlet ports l formly spaced. Each cy 'nder is provided with` a-pairfof inletports v18 and 18 respecnected b I5 ti'vely. f The inlet ports 18 and -18 -are conmeans-of passages, formed integral wit the `cylinders and water jacket,`

with the intake manifold 19, the intake ports 18 bein connected with the manifold by means o al common passage as shown in Fig. II.` The' inlet ports 18 and 18' are s acedfapa'rt an angular distance equal to t e spacing of "the ports 17 in the sleeve spacingof the ports 17 o the valve mem-` s ry y' 550. `shaft '14 and valve members is such that valves, whereby two of the ports17 ma register with the ports 18 and 18 simu tanel -ously.`

pair of exhaust ports 20, which are spacedA Each cylinder 3 is also provided with a apart an angular distances ual tothe angie.

The ratio of the gearing betweenk the crank Vthe. former makes six revolutions -to a single revolution of the latterf. Thismeans that the engine will crform three complete ,cycles durin eacii revolution of the valve member, he intake ports 18 and 18 are,

,thereo're', spaced from the adjacent vport 20 substantially thirty degrees. y I also lprovide means for admitting steam to the cy 1nderduring thelatter part of each intake stroke. This means comprises the ,21, which are so located thatthey reg,`

lsterwth' one of the sleeue` yvalve ports 1i' during thglattenfpat of each-intake stroke.

.These l'ports' areconnected by means of pasplane and are unisages, -cast integral with the water jacket, with thewsteam manifold 22.

For supplying,r steam to the manifold 22 I provide a Steam boiler; 23, which is separate from, but supported upon, the exhaust manifold, the bottom wall of the boiler being conformed to the contourof the exhaust I manifold in order to insure efiicient heat transmission.

In order to provide for more efficient heatingr of the water in the boiler 23 I provide a circulation tube 24, one end of which is connected with the lower side of the boiler and the other end of which` is connected to the y,

portion of the pipe passing through the c 1-r inder hea-d 27, as shown in Figs. III and I. The cylinder heads are formed of a single hollow integral body member having the depressions 28 thereinfor receivin the spark lugs. Depending annular anges 29 at tlie lower slde of the cylinder head coact with corresponding grooves in the top of the cylinder walls to orm a tight joint between the cylinder and the cylinder head. The bottom of the cylinder head. is also provided With apertures 27 opening into the water jacket. v

The outer peripheries of the sleeve valves are provided with crossed spiral grooves 30.

for receivinglubricating"oil under pressure. The oil is supplied through tbepassageways 31 and the lubrication manifold 32. The

oil is supplied under pressure and therefore works along the spiral grooves 30.

The lower end of the intake conduit 33 if* formed with branches 34 and 35 which lead i to the carbureters 36 and 37, respectively. y

iis

Butter# i improved engine will bet apparent from the 1 above description.

Referring to Fig. II,` the `valve members,

starting with the left hand cylinder and continuing toward the right, are shown.` in fi.1'1 11gcompression, exhaust'and intake positlons, respectively.HV Referring to 'the right' hand cylinder, it will be seen that before the completion of the intake stroke of the piston in this/cylinder the valve port 17 will register with the steam port 21, theres b admittitng steam to the cylinder during tile latter part of the intake stroke.

By providing a plurality of intake and exhaust ports in the cylinder and valve members, the explosive charges are readily drawn into the cylinder and the exhaust gases encounter little resistance to their expulsion therefrom, and, by providing means or applyin a suitable quantity of steam to the cy iner during the intake stroke the 8 in the lower edge of the sleeve valves, Iv

provide means whereby the may be quickly and easily removed throng the top of the c linder without disturbing the pistons and eir connections with the crank shaft. In the modified embodiment of m vention disclosed in Figs. XI to XI in- "ll elusive, I have illustrated al construction in which the crankshaft is desi ed to make four revolutions to each revo ution of the sleeve valve. In order to secure this r'esult I have provided the valve members' with oppositely disposed ports 17 which simultaneously r'e ister with the inlet ports -18 and 18", or theexhaust ports 20 and 20", twice durin -each revolution of the valve member. e arrangement of the inlet rts and the ex-haust ports in this embodiment of my invention is the same as that in the embodiment previously described, .except -that the inlet ports are s aced sl htly from the exhaust ports. In

is modi cation of m invention the inlet and vexhaust manifol s are formed integrally, as in the embodiment first described and this combined manifold is'provided with additional passages 21' which are connected with the steam manifold 22 by means of branched conduits 22",tl1e opposite ends of the steam passages 21 discharging into steam conduits 21'. that` are formedV integral with the cylinder casting, and discharge adjacent .he intake ports 18, these steam ports being spaced relative to the intake ports 18'* in such a manner that they discharge into the cylinders during the latter portions of the intake strokes of the v,alt pistons. The steam manifold 22' may revaporization and combustion of the fuel isv port lying inthe same ternal valve members -ceive its steam supply from a steam boiler similar to that' described above or from ,anyv other suitable source.

he Igears 11', 12', 13 and the worm wheel 8 and worm 9 should be so designed that the crank shaft 14' will make four revolutions to each revolution of the sleeve valve 6. f

While I have illustrated and described two embodiments of my invention, I desire it to be understood that my invention is capable of other adaptations and modifications falling within. the scope of the appended claims. A e

Having thus described my inventionhwhat I claim as new is:

1. In an internal combustion engine, the combmationof a plurality of internal] shouldered cylinders each provided wit pairs of alternating intake prts and exhaust ports and a steam inlet port lying in the same lplane, rotatable internal valve 'members s onldered to coact with the shoulders of said cylinders and disposed to project from the inner ends thereof and provided with worm teeth on theirprojecting ends, said valve members bein provided with three uniformly spaced va ve ports lying in the plane of said cylinder ports and ladapted to be bron ht into register therewith as the valve .mem rs rotate, the pairs of cylinder intake and exhaust ports-being spaced uniformly with said valve ports, the steam lports of the cylinders being positionedso that one of the valve member ports register therewith during each inta e stroke, steam delivery conn ions to said steam inlet ports, pistons reciprocating in said valve members, acrank shaft, a worm shaft provided with. Worms coacting with the worm gears of said valve members, and driving connections bey so` I `tween said worm and crank shafts.

2. In an internal combustion en ine, the combination of a plurality of cylin ers each provided with .pairs of alternating intake ports and exhaust ports anda steam inlet lane, rotatable inisposed to project from theinner ends thereof and provided with wormteeth. on their projectinglelds,

said valve members being provided three uniformly spaced valve ports lying in the plane of said cylinder ports and adapted. to be bron ht into register Vtherewith as the valve mem irs rotate, the pairs of cylinder intake and exhaust ponts being spaced uniformly 'with Said valve ports, the steam ports of the cylinders being positioned so that one of the 'valve member ports registers therewith during each intake stroke, steam delivery connections to said steam?, inlet ports, pistons reciprocating in said valve members, a crank shaft, a Worm shaft provided with worms coacting with the worm -gears of said valve members, and `driving connections between said worm and crank shafts.

3. In an internal combustion engine,` the combination of a plurality of internally shouldered cylinders each provided with )airs of alternating intake ports and: ex

aust ports and a steam inlety port lying in` the saine planerotntalile internal valve menibers shouldered to eoaet with the shoulders of Said cylinders and said valvey members being provided with three uniformly spaced valve ports lying in the plane of said cylin-- der ports and adapted to be brought into register therewith as the valve members rom tate, the pairs of cylinder intake yand eX- haust ports heilig spaced uniformly with seid valve ports, the steam ports of the cylinders being positioned so that one of the valve member ports `registers therewith during each intake stroke, steam delivery connections to said steam inlet ports and pistons reciprocating in said valve members.

4. lny an internal combustion engine, the combination of a plurality of iizylindeis each provided with pairs of alternating intake ports and exhaust ports and a steam inlet port lying in the same plane, rotatable internal valve members, said valve members beingV provided with three uniforn'ily spacedy valve ports lying in the plane of said cylinder ports and adapted to he brought into register therewith as the 'valve members rotate, the pairs of cylinder intake and exhaust ports being spaced uniformly with said valve ports, the steam ports of the ey]- inders being ymitioaed so `that one of the valre member ports registers therewith during eaioh intake stroke, steam delivery oonnections to said steam inlet ports, and pis tons reoiproeatingin said 'valve members.

ln an internal combustiion"engine,` the A,oombinatiim of a pluraiityof cylinders each "provided with pairs of alternating intake ports and exhaust ports ani'l a steam inlet port lying in the san'ie planer rotatable intei'nal valve members, said valve members being provided `with three uniformly spaced valve ports lying in the plane of said eylin der ports and adopted to be brought into register tberewitl'i as the valve members r0- tate, the pairs oi' cylinder intake and ex haust erts being .spaced uniformly with said va veports, the steam ports of the cylinders being positioned so'that one of the valve member ports registers therewith dur ing "each intake stroke, exhaust and intake manifolds formed integrally and having a wall in common whereby the intake inanifold is heated, a steam generating boiler dis-- posed in eoaoti-ngirelation with said exhaust manifold `tohe heated thereby, steam de-` livery connections from said boiler to 'id steam inlet ports and pistons reciproeating in said valve members.

G. In an internal combustion engine, the

haust ports and a steam in saine plane, a rotatable internal valve combination of an internally shouldered cylinder provided with pairs of alternating said valve memberbeing pri'ividedwith three l lying in the uniformly spaced viilve ports plane of said eylinder ports and adapted to be `brought into register therewith the valve member rotates, the pairs of eylinder intake and exhaust ports being spaeed'uniformly with said valve ports the steam port being positioned so that one of the valve member ports registers therewith durf ing each intake stroke, a steam delivery connection to said steam inlet port, a piston' sha. t, and a driving connection between the reei rooating in `said valve member, a crank inner end of said valve members and said era-nk shaft.

7. In an internal combustion engine, the

combinationy of a cylinder provided pairs of alternating intake lports and ex et port .lying in the with' member disposed to project from vthe inner i" e'nd thereof, said' valve member being provided with three uniformly spaced valve portsv lying in the plane of said itijlnider ports and adapted to be brought into reg` ister therewith as the valve member rotates, the pairs of cylinder intake and eizihaust ports being spaced uniformly with said valve ports, the steam port being positioned so that one of the valve member ports registers l therewith during delivery connection to said a piston riproeating in said valve member-5 a crank shaft, and a driving connection between the inner end of said valve member and said crank shaft.`

yeach intake stroke, a steam y steam inlet port,

8. In an internal` combustion en ine, the y combination of a cylinder provi( ed 4with pairs' of alternating intake ports and exhaust 'ports and a steam inlet port lying in the 'uniformly with said valve A port being positioned. so 'that one of the same plane, a rotatable internal valve member, said valve member bein r provided with three uiiiformlyrpaeed va ve ports lying in the plone of saidn cylinder ports and adapt ed to be brought into register tl'ierewitlias the valve member-rotates, the pairs of' ovl-- inder intake and exhaust ports being sp `valve member ports registers tl'ierewith 'dur-` .ing each intake sti'okefzilsteam delivery oonneetion to said steam inlet port, andan piston reciprocating in said valve member.

9. ln an interna-1 combustion erigida.:` the d ivitl'ry y ports and exhaust j in the omnbinalion of a. li'iylinler provide pairs of alternating intake ports and a steam' inlet port y1 same piange rotetableinterniilyiilgve iii/emr.

ports., the steam lill .hin the plane of said cylinder ports and? adapted to be brought into register thereber, said valve member being provided with three uniformly lspaced valve portslying with as the valve member rotates, the pairs of cylinder intake-and exhaust ports beingr spaced uniformly with said valve ports, the steam port-being positioned so that one of ythe valve member ports registers therewith during each intake stroke, an exhaust and intake manifold havingav wall in commonwhereby the intake manifold is heated, a steam generating boiler disposed in coacting relation with said exhaust manifold to be heated thereby, a steam delivery connection from said boiler to said steam inlet port and a piston reciprocating in said valve member.

10. In an internal combustion en `ne, the combination with a cylinder provi ed with a pair of intake ports and a pair of exhaust ports 'alternating with each other, a steam inlet port ldisposed in the same plane, a rotatable internal valve member provided with three ports spaced so as to successively register with said intake and exhaust ports, sald steam inlet port being positioned so that one of said valve ports registers therewith during the intake strokeymeans for supplying steam to said steam port, a piston, a cran shaft, and driving connections between said crank shaft and said valve member.

1l. In an internal combustion engine having` a crank-shaft, the combination with a `cylinder provided with a pair of intake ports and a pair of exhaust ports alternating with `each other, a steam inlet port disposed in the same plane, a rotatable internal valve member provided with three ports spaced so as to successively register with said intake and exhaust ports, said steam inlet port being positioned so that one of said valve ports registers therewith during the intake stroke, means for supplying steam to said steam port, a piston, and driving connections between said crank shaft and said valve let port ositioned so as to successively ister wit i said valve ports during the inta e stroke, and means for supplying steam to said inlet port.

13. In an internal combustion engine, the combination with a cylinder, of a sleeve valve member rotatably mountA-d therein and provided with a 'plurality of iorts. said cylindcr being provided with a ternate intake adapted to register withv said valve ports, a

piston reciprocating in said sleeve valve,-

the said steam inlet port being positioned so as to register with the ports in said valve sleeve during the intake strokes of Said piston, and means for supplying steam to said steam rt.

14. n an internal, combustion engine, the combination with a cylinder provided with inlet and exhaust ports and passages, of an intake manifold and an exhaust manifold communicating with said intake and exhaust passages respectively, and having a heat transmittin wall in common, of a sleeve valve rotata ly mounted in said cylinder, the said cylinder and valve bein provided with coacting orts for successive y admitting explosive c arges, and` steam to said cylinder and then dlscharging the fexhaust gases, means for supplying steam to said steam port comprising a boiler heated vb the exaust gases passing through sai( exhaust manifold, and means for alternately su plyin light or heavy fuels to said inta e mani old.

15. In an internal combustion engine, the combination with a cylinder provided with inlet and exhaust ports and passages, of an intake manifold and an exhaust manifold communicating with said intake and exhaust passages respectively, and having a heat transmitting wall in common, of a sleeve valve rotatabl mounted `in said cylinder, the said cylin er and valve being provided with cocting ports for successively admitting explosive char and steam to said cylinder, and then recharging the exhaust gases, means for supplying steam to said steam port, and means for supplying fuel to said intake manifold.

16. In a structure of the class described the. combination with a plurality of integrally formed cylinders, eabh havlng an annular groove in the end wall thereof, of a commonv cylinder head for said cylinders comprising a hollow body member having a flat bottom which forms closures `for the ends of ,said cylinders, the said bottom being provided with a plurality of annular flanges. co rating .with said annular grooves to orm -tight joints and with a plurality of a rtures communicating with said water jac et, the said head being pro-l vided with de ressions having apertured bottom walls fo receiving spark plugs.

17. In an internal combustion engine, a cylinder having 'a face to receive a manifold and provided with two pairsV of issages a luralit of orts greater in number than thsgnumbeir o? inlet or exhaust ports and lyin kin the plane of the latter' ports, said memlier ports4 being spaced soy that two of 5 them coact simultaneously with said inlet or exhaust ports, a piston reciprocating in said member,-a crank shaft, and dri-ving connections betweenthe shaft and valve member. l

18. In an internal combustion engine, a cylinder having a face to receive a-,manifold and provided with two pairs of alternating inlet and exhaust ports and with two pairs ofA inlet [and exhaust passages, each passage being independent of4 the others and each yopening to the cylinder and toy such face with each pair arranged side by side,

a rotatable internal valve member provided with three portslying in the plane of the c linder ports anv spaced so that two` of ein coact simultaneously with said inlet` or ,said exhaust ass if-piston. reciprocati in the valii'e liigilhsben-a crank shaft, andndriving connections between the shaft and valve member; y v 19. In an internal combustion engine, a cylinder having a face to receive a. manifold and provided with two pail-sof alternating inlet and, exhaust ports ,and with two pairs ofinlet and exhaust passages, each passage being independent o the others and each opening, to the cylinder and tosucli face with each pair arranged side b side and having a heat transmittin wa l 'in common, a rotatable internal va ve member" rovided with' three ports lying in `the p ane of :the cylinder ports and spaced so that 'two of them coact simultaneously with said inlet or said exhaust assages, a piston reciprocatingin the va'vemember, a crank shaft, and driving connections between the A shaft and valve' member.v y

f 20. In an internal combustion engine, a cylinder having two pairs of alternating` inlet and rexhaustports lyingk in the `same plane, and e sleeve valve rotatabl mounted to operate within the cylinder'anA provided with three ports, said ports being relatively positioned and the movements of the valve 5o timed to cause each valve rt to coact with the respective pairs ofcy inder` ports duringa succession of three cyclesl with a .valve port active with the pairs of ports during two succeeding cycles and inactive relative to such ports during thg third cycle. 2l. In an internal combustion engine, a cylinder having two airs of alternatin inlet and exhaust erts yin in the same p ane, and a sleeve va ve rotataly', mounted to op- 60 crate within the cylinder and provided with a plurality of 'ports spaced at ual angular distances inthe circumferentia length of the valve and bcing greater in number than the totality of cylinder inlet ports, said cyl- 65 inder and valve ports being relatively posiv ports during a third bcycle, each of t evvalve I cylinder having two airs'of alternatin 1nand tioned and the valve movements timed to cause a valve poi-t, invtwo succeeding cycles,- to coact with cach of said pairs of ports and to be inactive with either of such pairs of ports during a third cycle. 70 22. In an internal combustion engine, a cylinder having two pairs of alternating inlet and exhaust ports lying in the same plane, and a sleeve valve rotatably mounted to opery ate within the cylinder and provided with a plurality of ports spaced'at`equal angular distances in the circumferential length of the valve and being reater in number than the totality of cylin er inlet ports,- said cylinder and valve ports being relatively posi-"s0 tioned and the4 valve movements timed to causes valve port, in two succeeding cycles to coact with each 'of said pairs 'of ports and to be inactivefwith either ofsuch airs ofV 86 ports `being active with both" parsof ports during a succession of cycles equaling the number of valve ports. A f

23. In an internal combustion engine, a 90 let and exhaust ports yin in the same p ane, and a sleeve valve rotatab y mounted to operate within the cylinder and provided with a plurality of ports" spaced at equal a larl distances in the circumferential lenglix the valve and being vreater in number than the totality of cylin( c'r inlet ports,.said cylinder and valve ports being relatively positioned ,und the valve movements timed to cause aavalvevport, in two succeeding cycles, to coact with each of said pairs of ports, mrd to bc inactive with either of such 4airs ports during a third cycle, each of 4t e valse" -ports being active with. bothpairs of portsA- during a succession of three cycles. A 10's 24. In an internal combustion' engine a i.

cylinder having a face to receive a manifold j 'and provided with two `pairs of altern inlet and exhaust ports and with two pairs of vinlet and4 exhaust passa each pasy11g) sage bein inde xndent 01E t e other! and n each opening to t 1e cylinder and to such face with each pair arranged side 'by side, and a rotatable internal `valve member prvided with valve ports lying inthe plane of the 11:'. cylinder ports and adapted to be simultanef ously brought into registration with the ini. take or the exhaust ports as the valve mem- L ber rotates. l 25. In an internal combustion engine`, nfl cylinder having a face to receive a. manifoldl having two pairs of alternating inlet and exhaust ports and with passages individual t'o and connecting the ports with 'said face, each pair of ports comprising an intake 11e :nul an exhaust port, the passages of a air ofports extending inward from said ace side by side to provide aheat transmittin wall between such passages, and a rotatab e valve sleeve operating within ,the cylinder ofen ion

isa

and 'having-ports positioned so that two of them coact simultaneous] with said inlet or said exhaust ports of the cylinder as the sleeve rotates.

26. In an internal combustion engine, a pair of cylinders positioned to have a face to receive a manifold coperative with both c linders, each cylinder having two pairs of a ternating inlet and exhaust ports, said cylinders also having passages connecting said ports with such manifold faces, said passages being relatively arranged to provide individual communication between a port and such face during activity of the port, and a. rotatable sleeve valve for and operative within each cylinder, said valve having ports spaced to concurrently coact with both intake ports or both exhaust ports of a cyl,- inder as the valve rotates.

27. In an internal combustion engine, apair of cylinders positioned to have Va face to receive a manifoldcoperative with both c linders, each cylinder having two pairs of a ternating inlet and exhaust ports, said cylinders'also having passages connecting said ports with such manifold faces, said passages being relatively'arranged to provide individual communication between a port and such face during activit of the port, and a rotatable sleeve valve or and operative within each cylinder, said valve havin ports spaced to concurrently coact with bot i intake ports or both exhaust ports of a cy inder as the valve rotates, the passages from a pair of ports of both cylinders havlng their face o enings arranged side by side.

28. n an internal combustion engine, a

pair of cylinders positioned to have a face to receive a manifold coperative with both cylinders, each cylinder having two pairs of a ternating inlet and exhaust ports, said cyl- 29. n an internal combustion engine,af

pair of cylinders positioned to have a face to receive a manifold coperative with both cylinders, each cylinder having two pairs of a ternating inlet and exhaust ports, said cylinders also having passages connecting said v inders also having passages connecting said A ports with such manifold faces, said passages being relatively arranged to provide individual communication between a port andsuch face during activity of the port, and a rotatable sleeve valve for and operative within each cylinder, said valve having orts spaced to concurrently coact with bot intake ports or both exhaust ports of a cylinder as the valve rotates, said manifold having intake and exhaust formations to cooperate with the passage openings on said cylinder faces.

ERNEST R. oLsaN. 

